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UNIT-FEW Y STATES PATENT! IQFFIGE;

' s; LLOYD WIEG'ANE-Oli PHILADELPH A, PENNSYLVANIA.

ADH E S'IV'E O R- GU M PAPER.

Specification forming part of Letteus Patent him/13,731, datedIAuguSt-Q, 1864; antedated July 25, 1 864,

To all whom it mtly concern;

Beit known that I, S.LLOYD. WIE AN of' ,the city of Philadelphia, and Statev'of Pennsylvanimhave invented a newand improved-i. process ofiapplyingcoating of'gum soluble in. water to paper for'the purpose of fma-king adhesiv'c'orgum'paperwhich can be'folded-without adhering togetherandtkept dry, but upon application of moisture becomes adhesive; and I do'herehy declare that the following. is a'full andexactdescriptio'n thereo Th-e natureof my ihi'en tioufconsists in ap -I plying solutions of adhesive gum I water in the form otfa thick ,m'uci'lage .ina

heated state, and coolingtl e same after it has been applied to the paper. Thegum, when thus .applied,sticksor adheres to the paper to which it is applied in'a heated state; but after 0001- ing will not adhere to another surface-0T pa -i per that'it may beeppliedi'to without" being either reheated or,

to pressure.

The useful application'sof this process are" numerous, Among those most readily-apparent are the applicationof gum t0' the j;1apels:.0f

envelopes, the gum-thing of the-backs of revenue "and. postal vstamps, and ,the making-"0f gum-coated paper for printingofelection-ticket slips, for altering tickets, and for labels. I

The precise manner in which I conduct this process is as follows: I dissolve either gum-Z nrabic, dextrine, or a mixture ofthem in water until I form a thick 'mucilage, which when at atmospheric temperatures is atongh elasticmass, and heat the same to such a tem-perature as to render it of about the consistence of ordinary printers ink. lcoataform either. made of types or cut from-one piece of :woodor metal adapted to the form in which I desire the gun to be printed, and apply the form to "Soluble in...

moistened-or else'subjectcdi the surlaceof-paperto be coated, and a coat- --i'ng .of guinis thus deposited upon the-surface:

which formally-purposes will cool soonenou-gli -uisite' 1 have sometimes cooledit'hy artificial fa'ces'"and'by currentsof air. Upon-coolihg,it

will-be found that the-papers that 'havevben guniinedr in this manner maybe piled together .-theapplication ofv-m oisture.

Therapidity with which/sheetsthus gurn ned may be handled is an important adrant'age in the manufacturejof:enrelopesand gum-coated paper, as it. supercedes the necessity of large 'andcollect the sheets drying trays and-racks. .1 have sometimes, with goodlresul-ts, ad'd'ed i turely; adhesive.

and this I therefor di'SCl-aim;.jfb l1 h I WhatL-do claim as'myinvehtion, and desire to secureas-such by Letters Patent', is'

The mpplication of gurus, substantially-in the manner-chin anyv equivalent, and with the eflect hereiuhefor'eset-forth a s. LLO-YD' 'WLEGAND'.

Witnesses: a, p

I SAAO .H. STEEVER,

Jorm WHITE.

spontaneously; butlwhere' great rapidity is reqg' means by-contact Twit-h cold-conducting .su'r-.

without-adhering, but becoihe' 'adhe sive upon and cumhrous'dryiiig-ti'ays and racks,-and=ef f-. fects an economy in; these manufactures by Y dispensing-with jthetlabor requisite to spread; and envelopes from the a small amount ofssug ar to' the gum used for: this process; but "have, when anexcess' ,is em,

ploy-ed, observedthat the absorption'ofinioist; urefrornthe atmosphere rendered it'prema' Iainaware; that g -ethic cements hare .zheen applied in a heated stateiiii tlre arts-forlthepurpose of cementing materials .togethe'r,' 

